JPH0420031Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cork sheet material that is used as a pine material or interior material by bonding crushed cork particles to the surface of a sheet-like base material.

(Prior Art) Generally, places that are constantly wet, such as poolsides and bathrooms, are slippery and dangerous. For this reason, conventional methods have been to create small irregularities on the concrete surface by the pool, and to use fine tiles in the bathroom to increase the unevenness and reduce slipping. However, with this degree of unevenness, if there is a lot of water, a planar water film will be formed, so slipping cannot be reliably prevented, and if it falls over, it will be hard and therefore dangerous.

In addition, plastic sheets with printed patterns have traditionally been widely used as interior materials such as wallpaper, but these do not have moisture absorption properties, so if they are used in highly airtight rooms such as concrete buildings, they will trap moisture and cause mold. It was also the cause of the outbreak of dust mites.

Furthermore, because conventional wallpaper is thin, it lacks heat insulation and soundproofing effects, and many of the wallpapers are flat with printed patterns, so they do not have the benefits of natural materials.

(Problems to be solved by the invention) The present invention was devised in view of the above points, and uses cork that is highly elastic, flexible, soft to the touch, and resistant to water. By forming large uneven parts, it is slip-resistant and safe, has great heat insulation and soundproofing effects, and retains the natural feel of natural materials.
To provide a cork sheet-like material that regulates humidity through its breathing action and can be widely used for pine materials, interior decoration materials, bag materials, cosmetic materials, and the like.

(Means for solving the problem) The present invention is based on a particle size of 2 mm with adhesive applied to the surface.
It is characterized by pulverized cork particles of ~15 mm being bonded to a sheet-like base material with irregularities provided on the surface.

(Function) The cork sheet of the present invention is made by uniformly scattering large-sized crushed cork particles on the surface of the base material, creating uneven parts and bonding them with adhesive, so it can be used even if it gets wet with water. The uneven parts remain, and when used as a floor mat, it has an excellent anti-slip effect and is elastic, so even if you fall and hit your body, there is less chance of injury. When used as an interior material, a small amount of cork forms large irregularities and voids, giving it an excellent three-dimensional effect, as well as providing insulation and soundproofing effects, as well as regulating indoor humidity through its breathing action. It can also prevent the growth of mold and mites.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

After pulverizing the cork waste pieces using a crusher, they are sorted through wind tunnel or sieve sorting to obtain particles with an average particle size of 2 to 15.
Cork milled particles 1 of mm are obtained. In this case, if the average particle size is less than 2 mm, large irregularities will not be obtained and the result will be smooth like sliced cork foil, resulting in little effect, and if it exceeds 15 mm, it will easily peel off due to friction or impact. Therefore, the above range is desirable.

In addition, for poolside floor mats, bathroom floor mats, kitchen mats, etc., it is particularly preferable to use large crushed cork particles with an average particle size of 6 to 12 mm, and for use as wallpaper or bag material, 3 to 5 mm is preferable. .

As shown in FIG. 1, the cork crushed particles 1 thus obtained are angular, and the edges are brittle and easily crumble.

Next, when this crushed cork particle 1 is rubbed while applying pressure, impurities such as skin and sand on the surface are separated.
As shown in Figure 2, the corners become rounded and the fibers are bent irregularly, improving elasticity and flexibility.

Thereafter, the particles are sorted using a wind tunnel or a sieve to separate impurities, thereby obtaining crushed cork particles 1 having a uniform average particle size.

Next, the crushed cork particles 1 and the heat-fusible adhesive are stirred and mixed while being heated at a low temperature in a mixer, and the adhesive 2 adhered to the surface as shown in FIG.
The mixture is stirred until it dries and forms discrete particles that do not adhere to each other.

Thereafter, adhesive 2 is applied to the surface, and the dried crushed cork particles 1 are placed into a hopper 3 as shown in FIG.

Reference numeral 4 denotes a sheet-like base material, for example, a rubber sheet, plastic sheet, paper, etc. The upper surface of this base material is coated with a heat-fusible adhesive 2 in advance.

While running this base material 4 on rollers 5, crushed cork particles 1 are uniformly scattered from a hopper 3, and in this state, it is passed between heating rollers 6 heated to 70 to 80 ° C. Temporarily bonded crushed cork particles 1 are bonded together and bonded to the surface of the base material 4.

Thereafter, as shown in FIG. 5, the crushed cork particles 1 are passed between a high-temperature heating roller 7 and a belt-shaped felt mat 8 and hot pressed to completely bond the crushed cork particles 1... and the base material 4. As shown in FIG. 6, a cork sheet-like material 10 having an uneven portion 9 formed on the surface is obtained.

By hot pressing through the felt mat 8 in this way, the elastic crushed cork particles 1 are
. . . has an appropriate void portion 11, and can be joined by forming uneven portions 9 on the surface.

When the cork sheet material 10 using crushed cork particles 1 having a large particle size is used as a poolside floor mat, a bathroom floor mat, or a floor mat in a place that is constantly wet with water, the cork sheet material 10 has large irregularities 9.
Since the void portion 11 is formed, a planar water film is not formed, it is hard to slip, and even if it falls, it has high elasticity, so it can prevent injury.

Further, the crushed cork particles 1 are flexible when crushed, making them easy to walk on, and are resistant to water, so they have excellent durability. Furthermore, when walking barefoot, the uneven portions 9 moderately stimulate the soles of the feet and have the effect of causing pine surge.

Further, if it gets dirty, it can be washed with water, and the dirt stuck in the uneven portion 9 can be easily removed with a vacuum cleaner.

Further, the cork sheet material 10 of the present invention may be used as a floor mat for an automobile or an entrance mat that does not get wet with water very much, and is also effective as a dust collection mat because it can trap dirt and dust.

Furthermore, when used as an indoor interior material such as wallpaper, large uneven portions 9 can be obtained, resulting in an excellent three-dimensional effect and the calm and luxurious atmosphere of natural cork. Also, since large uneven parts 9 and void parts 11 are formed, it has excellent heat insulation and soundproofing effects.
It is effective not only for indoor use but also as an interior material for automobiles.

Furthermore, cork itself has a breathing effect that absorbs and releases moisture, so unlike conventional plastic sheet wallpaper, it can regulate indoor humidity and prevent the growth of mold and dust mites.

Fig. 7 shows the case where it is applied to bags such as bags 12, and the material is a cork sheet-like material 10 in which crushed cork particles 1 with an average particle size of about 2 to 5 mm are bonded to the surface of a base material 4 of vinyl chloride. That is.

In this case, the surface is different from that formed by a single piece of cork foil, and the crushed cork particles 1...
Since they are joined to each other in the state of 1, they have excellent flexibility and are difficult to crack even when bent significantly. Therefore, it can be applied not only to bags but also to the surfaces of shoe leather, containers, vases, furniture, electrical appliances, etc. as a decorative material to enhance the design effect.

[Effects of the invention] As explained above, according to the cork sheet material according to the invention, a cork that is highly elastic, flexible, soft to the touch, and resistant to water is used, and a small amount of particles obtained by pulverizing the cork is used. Because it can form large, uneven parts, it is safe and non-slip even when wet, and has great insulation and soundproofing effects.Also, it retains the natural feel of natural materials, and has a humidity control effect due to its breathing action. Starting with pine wood and interior materials,
It can be widely used for bag materials, cosmetic materials, etc.

[Brief explanation of the drawing]

Figures 1 to 6 sequentially show the steps of manufacturing a cork sheet according to the present invention. Figure 1 is a perspective view of crushed cork particles, and Figure 2 is a perspective view of crushed cork particles that have been rubbed. , FIG. 3 is a cross-sectional view of crushed cork particles with adhesive applied to the surface, FIGS. 4 and 5 are side views showing the state of hot pressing,
FIG. 6 is a side view of the cork sheet, and FIG. 7 is a perspective view of a bag made of the cork sheet. 1... Cork crushed particles, 2... Adhesive, 3...
Hopper, 4...Base material, 5...Roller,
6, 7...Heating roller, 8...Felt mat, 9...Irregularities, 10...Cork sheet material, 11...Gap, 12...Bag.

Claims (1)

[Scope of utility model registration request] 1. A sheet-like product made of cork, characterized in that crushed cork particles having a diameter of 2 to 15 mm coated with an adhesive are bonded to a sheet-like base material by providing irregularities on the surface thereof.